I'm not sure what you mean by 'the money thing'. Money and success are highly correlated in football these days. I'm not even sure I can be bothered backing that up or debating it, just look at where the trophies are ending up. And before anyone pipes up with counter-examples yes, of course there will be counter-examples because there are often fine lines in football, it's not completely deterministic, but there is a clear trend. Chelsea hadn't won the title for what, 50 years before Abramovic came along. City were in the Championship not that long ago, now they're champions. And they're the current top 2 in the table. You do the 'math'. With our squad and resources though, we should be closer.
Wenger has never been able to get us to triumph over better sides, when we were winning trophies left, right and centre it was because we were better than everyone else - arguably even then that side should have won more, we were ridiculously good.
Wenger has his flaws, obviously, but so will the next manager and while we do need to move on from Wenger let's not pretend that we'll be sweeping all before us when the next manager takes over. Unless Financial Fair Play has any bite it will always be difficult to compete with billionaire backed clubs. Fergie did it but he's the GOAT. No-one else has managed it with any consistency.